Monodisperse magnetic hydroxyapatite/Fe3O4 microspheres for removal of lead(II) from aqueous solution
Monodisperse magnetic hydroxyapatite/Fe3O4 microspheres for removal of lead(II) from aqueous solution
复制标题
用于去除水溶液中铅(II)的单分散磁性羟基磷灰石/Fe3O4微球
DOI：
10.1016/j.jallcom.2015.02.216
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发表时间：
2015-07
影响因子：
6.2
通讯作者：
Weijie Song
中科院分区：
文献类型：
--
作者：
Fuqiang Zhuang;Ruiqin Tan;Wenfeng Shen;Xianpeng Zhang;Wei Xu;Weijie Song
制备了单分散磁性羟基磷灰石（HAp）/Fe 3 O 4微球，并将其用于水溶液中Pb（II）的去除。利用X射线衍射（XRD）和X射线光电子能谱（XPS）分析了Pb 2+的吸附机理。在pH3.0时，吸附量可达440 mg/g，吸附平衡时间为1 h。实验数据符合Langmuir等温模型（R2= 0.9969），动力学符合准二级动力学模型（R2= 0.9970）。在pH3.0 -6.0范围内，Pb ~（2+）在HAp/Fe_3 O_4表面的吸附和随后的离子交换是主要的吸附机理。当pH值在3.0 ~ 2.0范围内变化时，Pb ~（2+）的去除主要以溶解-沉淀机制为主。磁性HAp/Fe_3O_4负载Pb_2+后可方便地分离。
Monodisperse magnetic hydroxyapatite (HAp)/Fe3O4microspheres were successfully synthesized and explored for the removal of lead(II) from aqueous solution. The mechanism of Pb2+uptake was characterized using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis. The sorption capacity toward Pb2+reached 440 mg/g at pH 3.0 and equilibrium was achieved within 1 h. The experimental data followed the Langmuir isotherm model (R2= 0.9969) and the kinetic results accorded with the pseudo-second-order model (R2= 0.9970). The sorption of Pb2+on the surfaces of HAp/Fe3O4and the following ion exchange are the primary mechanism at pH 3.0–6.0. The dissolution–precipitation mechanism response to the removal of Pb2+when pH varied from 3.0 to 2.0. The Pb2+-loaded magnetic HAp/Fe3O4could be separated conveniently.
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影响因子：
7.4
作者：
Jai Hyun Park;D. Lee;S. Im;Yong Hee Lee;D. Suh;K. Jun;Kwan-Young Lee
通讯作者：
Jai Hyun Park;D. Lee;S. Im;Yong Hee Lee;D. Suh;K. Jun;Kwan-Young Lee
DOI：
10.1016/j.saa.2012.05.034
发表时间：
2012-10
期刊：
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
影响因子：
--
作者：
Y. Ning;Jihui Li;W. Cai;X. Shao
通讯作者：
Y. Ning;Jihui Li;W. Cai;X. Shao
影响因子：
1.3
作者：
T. Eighmy;E. Shaw;J. Eusden;C. Francis
通讯作者：
T. Eighmy;E. Shaw;J. Eusden;C. Francis
影响因子：
14
作者：
Hou, Chun-Han;Hou, Sheng-Mou;Lin, Feng-Huei
通讯作者：
Lin, Feng-Huei
影响因子：
9.9
作者：
Huihui Yang;S. Masse;Hao Zhang;C. Hélary;Laifeng Li;T. Coradin
通讯作者：
Huihui Yang;S. Masse;Hao Zhang;C. Hélary;Laifeng Li;T. Coradin